Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-03-08
1997-08-19
Nguyen, Chanh
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 89, G09G 336
Patent
active
056593317
ABSTRACT:
An apparatus and method for driving a multi-level gray scale display are provided. The apparatus displays multi-level gray scale without an analog driving IC and includes a row function generator for generating a row function, a column signal operator for receiving and operating the row function and display data to output a column data, a standard voltage selection signal generator for receiving a clock to generate a standard voltage selection signal, a column signal generator for generating a plurality of levels of column standard voltages and dividing the column standard voltage selected according to the standard voltage selection signal to generate a plurality of levels of column voltage so as to drive the column electrode according to the column data, and a row signal generator for generating a plurality of row standard voltages and dividing the row standard voltage selected according to the standard voltage selection signal to generate a plurality of levels of row voltage so as to drive the row electrode according to the row function.
REFERENCES:
patent: 3668639 (1972-06-01), Harmuth
patent: 4775891 (1988-10-01), Aoki et al.
patent: 5200741 (1993-04-01), Usui
patent: 5459495 (1995-10-01), Scheffer et al.
Choi Sun-jeong
Oh Choon-yul
Nguyen Chanh
Samsung Display Devices Co. Ltd.
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